2003 2500HD Crew Cab 4X4 Hemi Pulling 24Ft Haulmark Elite Race trailer With 1980 RX-7 Race car and Equpment. "Hemi Haulin'Rotary" Don't know the Company that comes up with the ads for dodge but it sure works. Truck does a great job towing as fast as you dare go. The 34 Gal tank is a little exciting to fill these days but Mileage wise towing I usually get between 11 to 12 miles to gallon. Something about the exhaust note with the cat back has a tendency to catch yourself making heavier throttle application for the rumble effect. Think at 61 I'd out grow that stuff